I don't see how that can fix every possible bug Quanah. Please don't
arbitrarily suggest upgrades ...

It isn't arbitrary.

1) 2.2.15 is the stable release
2) 2.2 has been the stable release branch for some time now
3) There are a number of issues fixed between 2.1 and 2.2
4) 2.2 has been more reliable in my experience
5) 2.2 has better performance in my experience